Biogen Inc.
BIIB- Exchange
- Nasdaq
- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0000875045
In the last 90 days, Biogen Inc. insiders filed 0 open-market purchases and 1 sale; 1,047 institutions reported holding it in 13F filings for Q2 2026, worth $30.7B in total; no superinvestor holds it.
13F holders, Q1 2026
Institutional positions in Biogen Inc. as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 1,014
- +33 vs. Q4 2025
- Shares held
- 135.0M
- +15.4M (+12.9%) vs. Q4 2025
- Total value
- $24.7B
- +$3.70B (+17.6%) vs. Q4 2025
- New holders
- 138
- 401 more added
- Sold out
- 105
- 290 more reduced
20 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting BIIB on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 1,047 | $30.7B |
| Q1 2026 | 1,015 | $24.7B |
| Q4 2025 | 1,002 | $24.6B |
| Q3 2025 | 909 | $18.4B |
| Q2 2025 | 867 | $16.3B |
| Q1 2025 | 882 | $17.7B |
| Q4 2024 | 879 | $20.2B |
| Q3 2024 | 921 | $25.1B |
| Q2 2024 | 947 | $29.9B |
| Q1 2024 | 955 | $28.0B |
| Q4 2023 | 1,005 | $33.3B |
| Q3 2023 | 966 | $32.2B |
| Q2 2023 | 1,009 | $36.1B |
| Q1 2023 | 1,004 | $35.0B |
| Q4 2022 | 1,033 | $34.6B |
| Q3 2022 | 987 | $33.0B |
| Q2 2022 | 930 | $25.0B |
| Q1 2022 | 954 | $25.9B |
| Q4 2021 | 1,014 | $29.7B |
| Q3 2021 | 1,044 | $35.1B |
| Q2 2021 | 1,107 | $43.6B |
| Q1 2021 | 1,096 | $35.7B |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding Biogen Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| MMBG Investment Advisors Co. | 1,248 | $228.8K | 0.02% | 00.0% | Unchanged |
| Johnson Investment Counsel Inc | 1,246 | $228.4K | 0.00% | −23−1.8% | Reduced |
| Patton Fund Management, Inc. | 1,244 | $228.1K | 0.04% | 00.0% | Unchanged |
| D.A. Davidson & Co. | 1,218 | $223.3K | 0.00% | +1,218 | New |
| Alphadyne Asset Management LP | 1,218 | $223.3K | 0.03% | +1,218 | New |
| Wealthspire Advisors, LLC | 1,209 | $221.6K | 0.00% | −842−41.1% | Reduced |
| Analyst IMS Investment Management Services Ltd. | 1,208 | $221.0K | 0.01% | 00.0% | Unchanged |
| Platform Technology Partners | 1,201 | $220.2K | 0.04% | +1,201 | New |
| Allegiance Financial Group Advisory Services LLC | 1,200 | $220.0K | 0.04% | +1,200 | New |
| Regions Financial Corp | 1,188 | $217.8K | 0.00% | −49−4.0% | Reduced |
| Independent Advisor Alliance | 1,186 | $217.4K | 0.00% | −4,801−80.2% | Reduced |
| Aaron Wealth Advisors | 1,185 | $217.2K | 0.01% | +1,185 | New |
| Western Wealth Management, LLC | 1,183 | $216.9K | 0.01% | −71−5.7% | Reduced |
| Basepoint Wealth LLC | 1,178 | $215.9K | 0.12% | +14+1.2% | Added |
| Rehmann Capital Advisory Group | 1,165 | $213.6K | 0.01% | +1,165 | New |
| Kingsview Wealth Management, LLC | 1,156 | $211.9K | 0.00% | +1,156 | New |
| Investment House LLC | 1,155 | $211.7K | 0.01% | −575−33.2% | Reduced |
| Northwest Wealth Management, LLC | 1,152 | $211.2K | 0.03% | +1,152 | New |
| Tradewinds, LLC. | 1,129 | $211.2K | 0.07% | +1,129 | New |
| IFP Advisors, Inc | 1,151 | $211.0K | 0.00% | −55−4.6% | Reduced |
| McMillan Office, Inc. | 1,150 | $210.8K | 0.03% | 00.0% | Unchanged |
| Sym Financial Corp | 1,150 | $210.8K | 0.02% | +1,150 | New |
| Poehling Capital Management, LLC | 1,144 | $209.7K | 0.04% | +1,144 | New |
| Sapient Capital LLC | 1,143 | $209.5K | 0.00% | +1,143 | New |
| Nwam LLC | 1,141 | $209.2K | 0.01% | +1,141 | New |
| Probity Advisors, Inc. | 1,131 | $207.3K | 0.03% | +1,131 | New |
| Advyzon Investment Management, LLC | 1,129 | $207.0K | 0.02% | −83−6.8% | Reduced |
| New Age Alpha Advisors, LLC | 1,119 | $205.1K | 0.01% | +1,119 | New |
| Bell Bank | 1,109 | $203.3K | 0.01% | +1,109 | New |
| Wedbush Securities Inc | 1,108 | $203.0K | 0.01% | +1,108 | New |
| Resources Investment Advisors, LLC. | 1,101 | $201.9K | 0.00% | −291−20.9% | Reduced |
| Lighthouse Financial LLC | 1,101 | $201.8K | 0.12% | +1,101 | New |
| Twinbeech Capital LP | 1,100 | $201.7K | 0.02% | −1,734−61.2% | Reduced |
| TRB Wealth Management, LLC | 1,097 | $201.1K | 0.03% | +1,097 | New |
| Quotient Wealth Partners, LLC | 1,097 | $201.1K | 0.01% | +1,097 | New |
| Meeder Asset Management Inc | 1,071 | $196.3K | 0.01% | +855+395.8% | Added |
| Pinnacle Wealth Planning Services, Inc. | 1,030 | $188.8K | 0.02% | +10+1.0% | Added |
| Horizon Bancorp Inc | 1,017 | $186.0K | 0.09% | +35+3.6% | Added |
| Deseret Mutual Benefit Administrators | 943 | $172.9K | 0.06% | +392+71.1% | Added |
| Mascoma Wealth Management LLC | 927 | $169.9K | 0.04% | +2+0.2% | Added |
| Nexus Investment Management ULC | 920 | $168.7K | 0.02% | 00.0% | Unchanged |
| Acima Private Wealth, LLC | 916 | $167.9K | 0.05% | 00.0% | Unchanged |
| Rothschild Investment LLC | 909 | $166.6K | 0.01% | +396+77.2% | Added |
| Manchester Capital Management LLC | 901 | $165.2K | 0.02% | −3−0.3% | Reduced |
| Steward Partners Investment Advisory, LLC | 892 | $163.5K | 0.00% | −53−5.6% | Reduced |
| Larson Financial Group LLC | 881 | $161.5K | 0.01% | +206+30.5% | Added |
| Legacy Bridge, LLC | 880 | $161.3K | 0.06% | −30−3.3% | Reduced |
| Bryn Mawr Trust Co | 867 | $158.9K | 0.00% | 00.0% | Unchanged |
| Sava Infond d.o.o. | 825 | $151.2K | 0.02% | 00.0% | Unchanged |
| Pin Oak Investment Advisors Inc | 820 | $150.0K | 0.11% | 00.0% | Unchanged |
| Centennial Bank | 800 | $146.7K | 0.05% | 00.0% | Unchanged |
| Eastern Bank | 796 | $145.9K | 0.00% | −60−7.0% | Reduced |
| Twin Tree Management, LP | 759 | $139.1K | 0.03% | −11,511−93.8% | Reduced |
| Massmutual Trust Co FSB | 750 | $137.5K | 0.00% | −10−1.3% | Reduced |
| BNP Paribas | 700 | $128.3K | 0.00% | 00.0% | Unchanged |
| TD Waterhouse Canada Inc. | 691 | $126.7K | 0.00% | +63+10.0% | Added |
| Whittier Trust Co | 699 | $120.5K | 0.00% | −67−8.7% | Reduced |
| TIAA Wealth Investment Management LLC | 629 | $115.3K | 0.00% | +629 | New |
| ASR Vermogensbeheer N.V. | 600 | $110.0K | 0.00% | +600 | New |
| JNBA Financial Advisors | 596 | $109.3K | 0.01% | 00.0% | Unchanged |
| Tidemark, LLC | 593 | $108.7K | 0.03% | +1+0.2% | Added |
| Wilkerson Advisory Group LLC | 593 | $108.7K | 0.04% | +334+129.0% | Added |
| CVA Family Office, LLC | 581 | $106.5K | 0.01% | +117+25.2% | Added |
| Salem Investment Counselors Inc | 566 | $103.8K | 0.00% | +566 | New |
| Ronald Blue Trust, Inc. | 560 | $102.7K | 0.00% | −280−33.3% | Reduced |
| SRS Capital Advisors, Inc. | 515 | $98.0K | 0.00% | +260+102.0% | Added |
| Hanson & Doremus Investment Management | 525 | $96.0K | 0.01% | 00.0% | Unchanged |
| Cromwell Holdings LLC | 515 | $94.4K | 0.05% | +4+0.8% | Added |
| Curat Global, LLC | 503 | $92.2K | 0.09% | 00.0% | Unchanged |
| Capital Analysts, LLC | 501 | $92.0K | 0.00% | 00.0% | Unchanged |
| Encore Global Management, LP | 500 | $91.7K | 0.06% | +500 | New |
| Pflug Koory, LLC | 464 | $85.1K | 0.04% | 00.0% | Unchanged |
| Paradigm Asset Management Co LLC | 455 | $83.4K | 0.02% | 00.0% | Unchanged |
| Lavaca Capital LLC | 447 | $81.9K | 0.02% | 00.0% | Unchanged |
| Richardson Financial Services Inc. | 437 | $80.1K | 0.05% | 00.0% | Unchanged |
| Key Financial Inc | 406 | $74.4K | 0.01% | 00.0% | Unchanged |
| Onefund, LLC | 403 | $74.1K | 0.05% | −8−1.9% | Reduced |
| Greykasell Wealth Strategies, Inc. | 385 | $70.6K | 0.03% | 00.0% | Unchanged |
| Caldwell Trust Co | 383 | $70.2K | 0.01% | 00.0% | Unchanged |
| Wealth Enhancement Trust Services, Inc. | 380 | $69.7K | 0.01% | +380 | New |
| ORG Wealth Partners, LLC | 349 | $64.0K | 0.01% | 00.0% | Unchanged |
| Itau Unibanco Holding S.A. | 349 | $64.0K | 0.00% | +12+3.6% | Added |
| Prestige Wealth Management Group LLC | 346 | $63.4K | 0.01% | 00.0% | Unchanged |
| MCF Advisors LLC | 346 | $63.4K | 0.00% | +22+6.8% | Added |
| Zions Bancorporation, National Association | 346 | $63.4K | 0.00% | −276−44.4% | Reduced |
| Vanguard National Trust Co | 344 | $63.1K | 0.00% | +344 | New |
| Root Financial Partners, LLC | 341 | $62.5K | 0.00% | +156+84.3% | Added |
| TopTier Wealth Management, LLC | 336 | $61.6K | 0.04% | +336 | New |
| LRI Investments, LLC | 333 | $61.1K | 0.01% | +281+540.4% | Added |
| City State Bank | 322 | $59.0K | 0.02% | 00.0% | Unchanged |
| Harbour Investments, Inc. | 320 | $58.7K | 0.00% | +105+48.8% | Added |
| Vermillion Wealth Management, Inc. | 310 | $56.8K | 0.02% | +10+3.3% | Added |
| True Wealth Design, LLC | 305 | $55.9K | 0.02% | +69+29.2% | Added |
| Costello Asset Management, INC | 300 | $55.0K | 0.02% | 00.0% | Unchanged |
| Newbridge Financial Services Group, Inc. | 300 | $55.0K | 0.01% | 00.0% | Unchanged |
| Aster Capital Management (DIFC) Ltd | 398 | $54.5K | 0.02% | −10,089−96.2% | Reduced |
| CoreFirst Bank & Trust | 295 | $54.1K | 0.03% | −295−50.0% | Reduced |
| Covestor Ltd | 293 | $54.0K | 0.04% | −289−49.7% | Reduced |
| Trust Co | 291 | $53.3K | 0.00% | 00.0% | Unchanged |
| Cary Street Partner Investment Advisory LLC | 284 | $52.1K | 0.01% | +37+15.0% | Added |